Thomas b



(No Model.)

T. E. GLEASON. SLIDE VALVE INDICATOR.

No. 307,538. Patented Nov. 4, 1884.

INVENTOR 7 %08. E, G'Zeason,

WITNESSES:

ATTORNEY N. PErEns. WWW-Lithographer. Washington. 04 c.

UNHED STATTs PATE T Orrrcn.

THOMAS E. GLEASON, OF WASHINGTON, DISTRICT OF COLUMBIA.

SL|DE=VALVE INDICATOR.

SPECIFICATION forming part of Letters Patent No. 307,538, dated November4-, 1884.

Application filed-June E2, 1884.

T 0 (bZZ whom it may concern:

Be it known that I, THOMAS E. GLnAsoN, a citizen of theUnited States,residing at \Vashingtou city, in the District of Columbia, have inventedcertain new and useful Improvements in Slide-Valve Indicators and I dohereby declare the following to be a full, clear, and'exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to improvements in attachments for slide-valves;and the object is to produce a device by which the exact position of thevalve and ports of the cylinder are plainly indicated without thenecessity of removing the cover of the steam-chest, so that the valvecan be set and altered as required.

To attain this object my invention consists in producing a skeletonvalve and ports arranged on the outside of the steam-chest at anysuitable place, and connecting the valve with the valve-stem in anysuitable manner, so that the valve in the steam-chest and the skeletonvalve shall always move in unison, and the relative position of thevalve and steam-ports is always indicated and in view. It also consistsin certain details of construction and arrangements of parts, as will bemore fully described hereinafter, and more specifically pointed out inthe claims, reference being had to the accompanying drawings, and theletters of reference marked thereon.

Like letters indicate similar parts in the different figures of thedrawings, in whieh- Figure l is a side elevation, partly in sec tion, ofan engine showing my attachment in position. Fig. 2 is a detailperspective view of the attachment and valve. Fig. 3 is a detail of theseat, showing a scale for setting the valve.

In the accompanying drawings, A represents an engine fany construction,having the cylinder B and steam-chest G, and connected to the bedplateD. \Vithin the steam-chest is placed a slide-valve, E, of any ordinaryconstruction, to which the valve-stem c is attached,

and it is connected to a rock-shaft and arm, a, operated in the usualmanner by the eccentric and rod b. To the bed-plate is secured an arm,F, to which the bracket 0, forming a skeleton (No model.)

valve seat, is cast or otherwise firmly secured.

In the upper side of the skeleton valve seat is cut or otherwisearranged the exact width of the steam inlet and exhaust ports, which area counterpart of those within the steam-cylin- 5 5 der forming thevalve-seat. To the valvestem is attached, in any suitable manner, theskeleton valve (Z, which is a counterpart on its face of the valve E.The face of the skeleton valve fits and slides on the face of thevalveseat, and, as it moves backward and forward with and at the sametime as the valve E moves, it always indicates the relative position ofthe valve and steanrports, thus affording a ready means to set the valvein the steamchest without the necessity of removing the cover of thesteam-chest.

The skeleton seat may be attached to the boiler, especially in portableengines.

It will be readily seen by those skilled in 7c the art that this deviceis equally adapted to long and short D-valves, to piston-valves, and tothe main and cutoff valves of engines. It can be also readily applied tothe oscillating or rotary valves by slight changes of operat- 7 5 ingmechanism, which will readily suggest themselves to the skilledmechanic. It can be easily applied to engines now in use as Well as tonew ones without in any way marring the beauty and symmetry of theengine.

The skeleton valve can be made of any shape or size, and the face orseat with the steam-ports can also be changed to suit circumstances. Itcan be made in any other suit able manner and of any other shape thanthat shown in the drawings without departing from the spirit of myinvention. For instance, the e bracket may be attached to the cylinderin stead of the bed-plate, and the skeleton valve may be made as a partof the valve-stem instead of being attached to it. In portable enginesthe seat with its ports may be attached to the boiler, if desired.

A scale indicating the inches and fractions may be applied to theskeleton seat for adj ust- 5 ing the valve.

Having thus described my invention, what I claim, and desire to secureby Letters Patent,

1. The combination of an incased valve and zoo cylinder steam-ports withan exterior skeleton valve and skeleton seat for indicating the relativeposition of the incased valve to the steamports, substantially as andfor the purpose set forth. I

2. The combination of the steam-ports of an engine and a valve forcontrolling its fluidsupply with a skeleton valve connected to thevalve-rod, and a skeleton seat having ports, substantially as and forthe purpose described.

3. The combination of a valve with a skeleton valve attached to thevalve-rod, and a skeleton-valve seat secured to the engine frame orother suitable place on the engine or boiler,

substantially as and for the purpose specified. I 5

4-. The combination of an incased valve for controlling the fluid-supplyto an engine With a skeleton valve attached to the valve-rod,rocker-arm, eccentric-rod, a skeleton seat indicating the steam-ports inthe incased valveseat, and an eccentric for operating the valve,substantially as specified.

In testimony whereof I hereby affix my signature in presence of twoWitnesses.

THOMAS E. GLEASON.

lVitnesses:

J. M. YZNAGA, GUY L. DE Mo'r'rn.

